3 research outputs found
Document Intelligence Metrics for Visually Rich Document Evaluation
The processing of Visually-Rich Documents (VRDs) is highly important in
information extraction tasks associated with Document Intelligence. We
introduce DI-Metrics, a Python library devoted to VRD model evaluation
comprising text-based, geometric-based and hierarchical metrics for information
extraction tasks. We apply DI-Metrics to evaluate information extraction
performance using publicly available CORD dataset, comparing performance of
three SOTA models and one industry model. The open-source library is available
on GitHub.Comment: Accepted to DAS 2022, 15TH IAPR INTERNATIONAL WORKSHOP ON DOCUMENT
ANALYSIS SYSTEM
The Influence of Mechanical Alloying and Plastic Consolidation on the Resistance to Arc Erosion of the AgâRe Composite Contact Material
The article presents the influence of mechanical alloying and plastic consolidation on the resistance to arc erosion of the composite AgâRe material against the selected contact materials. The following composites were selected for the tests: Ag90Re10, Ag95Re5, Ag99Re1 (bulk chemical composition). AgâRe materials were made using two methods. In the first, the materials were obtained by mixing powders, pressing, sintering, extrusion, drawing, and die forging, whereas, in the second, the process of mechanical alloying was additionally used. The widely available Ag(SnO2)10 and AgNi10 contact materials were used as reference materials. The reference AgNi10 material was made by powder metallurgy in the process of mixing, pressing, sintering, extrusion, drawing, and die forging, while the Ag(SnO2)10 composite was obtained by spraying AgSniBi alloy with water, and then the powder was pressed, oxidized internally, sintered, extruded into wire, and drawn and die forged. The tests of electric arc resistance were carried out for loads with direct current (DC) and alternating current (AC). For alternating current (I = 60 A, U = 230 V), 15,000 switching cycles were made, while, for constant current 50,000 (I = 10 A, U = 550 V). A positive effect of the mechanical alloying process and the addition of a small amount of rhenium (1% by mass) on the spark erosion properties of the AgâRe contact material was found. When DC current of 10 A was used, AgRe1 composite was found to be more resistant than commonly used contact materials (AgNi10 and Ag(SnO2)10)